Form for molding concrete walls



Sept. 21, 1948. F. s. SLATER ,7

FORM FOR MOLDING CONCRETE WALLS Filed April 26, 1945 2 Sheets-Sheet 1 r r ,INVENTOR.

1477' ORNE VS Sept. 21, 1948.

Filed April 26. 1945 F. s. SLATER 2,449,725

FORM FOR MOLDING CONCRETE WALLS 2 Sheets-Sheet 2 FIGE.

c a c /A\ rramysvs Patented Sept. 21, 1948 2,449,725- ronniroit Moraine oo ncanrewimts Frazeur S'.'- Slater, Chicago, Ill; I

Application ApriIZG, 1945, Serial No. 590336 This application relates to a form for molding concrete walls.

It is an object of the present: invention to rovidfe a form which can be easily operated by an unskilled laborer and which may be used in the construction of small buildings;

The form to he described is particularly use ful in the building of structures a portionat a time with small concrete mixes. It contemplates theerection of a structure with multiple tiers of concrete, each of which is formed individually after the preceding one has been properly set and the same form is used for each tier", the form being raised after each pouring.

Another object of the invention is the provision of a form for this purpose which properly locates itself as it is adjusted upwardlyand which is readily positioned and removed. other objects and features of the invention relating to' details of construction and operationwill be brought out in the following description and claims.

In the drawings:

Fig, 1 is a perspective view showing all or the elements of the form inpositi'on. d

Fig. 2 is a sectional view illustrating the manner in which the inner members of the form are separated and spaced.

Fig. 3 is a plan view of the spacer.

In Fig. 1 two tiers A and B are shown with a portion ofncor C. The'ti'ers' are formed so that they provide a groove D at the top'and bottom of each molded section as they are built up. Two L-shaped members I and 2" pivoted at 3' serve to support the forms. The threaded member 4-, having left hand and right hanjd threads on eachend, respectively, cooperates with threaded nutsand I2 mounted onparts I and 2, respectively. Enough lay is Ieftin tapping th-read'sin nuts fl and I: to permit slight angular movement of arts l and 2. If more movement is desired nuts H and I2 may be pivot-ally mounted on angles I and 2. d

The angles I and. 2 are each provided with a series of spaced lio'les" through which the pivot 3 may pass. Thus the clamps" may he used for walls of varying thickness by simply alteringthe 'pivot point 3.

Members 5 and 6 at the lower ends of parts I and- 2 fit-into thegroovesD- to positionthe mem bars I and 2 vertically... Transverse memberstl, 8,. 9 and I0 cooperate with parallel grooves t3 and I4 in outside plates ii to position the plates vertically The pressed-in. portion of grooves f3 rest on the curved upper edges of tier B to further locate the form. A suitable end-plate or 2: stofi'ifl maybe positioned at any place along the tier to accommodate an end, a door or window.

If a tier is to be Join d, reinforcin tier members 2| maybe inserted through the endplate 2i].-

The tiers are formed of spaced portions which are tied together by rods Inside plates 26 and fl'foriii the inner surfaces of the tiers. Notches are provided at s aced intervals in the inner plates to accommodate the rods 25. Grooves 28 and 2B in the inner plates correspond with grooves I3 and f4 in the outer plates.

In order to space the form plates prior to a pour a If-shaped spacer formed of a vertical member and a horizontal member 36 is rovided. Vertical member 35 has" a slit 3'! at the formed tiers case of slight variation in dimensions.

Thecross bar'- it rests on plates 26 and 21' and" projects over to contact the u per edges of outsideplates I 5 which extend higher than the inner plates; A j b Thus t 6 single member 35- -36 serves to space both inner and outer lates: The edges of bar 3d are reunued'so that it may berotated and readily withdrawn" after the pour has hardened.

The groo re -forming heads on the mo1d plates cooperate with the locating clamps to define the t'irs during each pour. However, another equally important feature thereof is the grooved rorniati'on imparted to the concrete wall elimimating unsightly joiijit marks and providing softer break-up lines desirable from an architectural point of View; These grooves also provide a guide 1 fornail sfthat'ma y be driven into the wall to se cure any covering as paneling on structural ingadapted to rest oniormed edges of a supportin-gatier atthebottom, and to form grooves in the tiers at the top and bottom edges, and

means: to. retain said plates in position during a .pou-r comprising pivoted clamping members extending toeach side of said outer piates, means on the ends thereof. to register with a groove in a-iormed tier spaced means to register with the grooves in said outer plates a spacing means between said plates; and means to apply force to rib serving to form the said junction line be tween adjacent sections, retainer means for re,- taining said plates in parallel spaced relation to receive a plastic therebetween and to define the section being formed, said retainer means extending beyond the above said overlapedges of spaced from one edge of the plate to provide an overlap portion between the rib and the said edge of the plate, said rib serving to form the said junction groove between adjacent sections, a clamp in the form of an inverted U straddling the outer sides of said plates for retaining said plates in parallel spaced relation to receive a plastic therebetween and to define the section being formed, the legs of said U clamp extendingbeyond the above said overlap edges of each of said plates, and upper and lower registering means carried by each of said legs and spaced a each of said plates, and upper and lower means carried by each of the extended portions of said retainer means and spaced a distance substantially equal to the distance between the saidjunction lines in said tier, said uppermeans interengaging the plate at said rib and said lower means being adapted to engage the two previously formed sections at their junction line whereby each mold plate may be accurately v-posi-,

tioned with respect to the second previously formed section regardless of the extent'the last formed section has settled whereby upon pouring the plastic between said plates the overlapping portion and rib of each of said plates is adapted to cooperate with'the plastic to complete and perfect the last previously formed section in case of shrinkage.

3. A mold adapted for use in theconstruction of a plastic wall comprising a plurality of sec tions in the form of a tier with the junctions be-,

tween adjacent sections at theouter face of. the

.- tion and rib of each of said plates is adapted -to cooperate with the plastic to complete and per l feet the last previously formed section in case of distance substantially equal to the distance between the said junction grooves in said tier, said upper registering means interengaging the plates in said ribs and said lower registering means being adapted to engage the two previously formed sections in their junction grooves whereby each mold plate may be accurately positioned with respect to the second previously formedsection regardless of the extent the last formed section has settled whereby upon pouring the plastic betweensaid plates the overlapping porshrinkage.

5. A mold adapted for use in the construction.

of a plastic wall comprising. a plurality of sections inthe form of a tier with the junctions be- I tween adjacent sections at the outer face of the tier being substantially parallel straight grooves, said mold comprising a pair of plates each hav-f ingva rib on its inner face, extending parallel and tier being substantially parallel straight grooves,

said mold comprising a pair of plateseach having a rib on its inner face extending along and spaced from one edge of the plate to provide an overlap portion between, the rib and the said edge of the plate, said rib serving to form the said junction groove between adjacent sections,

retainer means for retaining saidflplates in parallel spaced relation to receive a plastictherebetween and to define the section being formed,- said retainer means having legs extending beyond the above said overlap edges of each -ofsaid plates, and upper and lower means carried by each of the extended portions of said legs and; spaced a distance substantially equal to the distance between the said junction grooves, insaid tier, said upper means. interenga ging the plate at said rib and said lower means being adapted to engage the two previously! formed sections in their junction groove wherebyeach mold plate may be accurately positioned with respect to the second previously formed section regardless of the extent the last formed section hassettled whereby upon pouring the plastic between said plates the overlapping portionand rib of each of said plates is adapted tocooperate with the plastic to complete and perfect the last previously formed section in case of shrinkage.

4. A mold adapted for use in the" construction of a plastic wall comprising a plurality of sections in the form of a tier with the junction between adjacent sections at the outer face of the tier being substantially parallel straight grooves,

said mold comprising a pairof plates each having a rib on its inner face extending alonga'nd adjacent to the lower edgeof the plate to provide an overlap portion betweenwthe rib and the ,said edge of the plate, each plate also having a rib on its, inner face extending parallel to the aforementioned rib and spaced above the aforemeng,

tioned rib a distance equal to :the distance between the grooves in said tier, said ribs serving to form the saidjunction groove between adjacent sections. a clamp in the form of an inverted,

U straddling the outer sides of saidplates for retaining said plates in parallel spaced relation to receive a plastic therebetween and to define the section being formed, the legs of said ,U clamp extending beyond the lower overlap edge of each of said plates, and upper, lower and intermediate registering means carried by. each of said legs and spaced vertically from each other a distance substantiallyequal to the distance between said junction grooves in said tier, said upperand 1 intermediate registering means. interengaging the plates in said ribs and said lower registering means being adapted to engage thetwo previouslyv formed sections in their junction grooves whereby each mold plate may be accurately positioned ,with respect to the second previousl formed section regardless of the extent the,

last formed section has settled whereby upon pouring the plastic between said plates the over-' lapping portionand rib of each of each of said plates is adapted to cooperate with the plastic to complete and perfect the last previously formed section in case of shrinkage.

6. The combination as set forth in claim 5 wherein the upper, intermediate and lower regis-i tering means each comprises a rod ai-lixed to the leg of the U clamp in perpendicular relation therewith and wherein the rods are arranged to interengage the ribs in the plate and the groove between the last and next to last section previ} ously formed.

5 6- '7. The combination as set forth in claim 5 mm wherein the inverted U-clamp is pivoted at the ED STATES PATENTS base of the U, and means are mounted on each um r Name Date Side of the pivot point above the legs of the clamp. 803,703 Milam Nov. 7, 1905 to exert a. closing movement of the legs of said 845,635 v Feb. 26. 1 07 U-clamp.

2.285 Le Sueur Mar. 15, 1910 FRAZEUR s, SLATER, 953,720 Stoeser Apr. 5, 1910 1,130,647 Thompspn Mar. 2, 1915 REFERENCES CITED 1,439,826 League Dec 26, 1922 The following references are of record in the 10 Lama McKee June 16"1931 file of this patent: 

